Alpheus, also known as Alpheios (Ancient Greek: Ἀλφειός, meaning [whitish]), was in Greek mythology a river (the modern Alfeios River) and river-god.

River

Alpheus was also the river which [Hercules], in the fifth of his labours, re-routed in order to clean [the filth] from the Augean Stables in a single day, a task which had been presumed to be impossible.

Species of [shrimp]

Alpheus is a [genus] of snapping shrimp of the family Alpheidae. This genus contains in excess of 250 species, making this the most species-rich genus of shrimp. Like other snapping shrimp, the claws of Alpheus are asymmetrical, with one of the claws enlarged for making a popping noise.

A learned chief/A capable person